
Regular verb: gain - gained - gained
Simple form | V-ing form | 
| I may gain you may gain she may gain we may gain you may gain they may gain  | I may be gaining you may be gaining she may be gaining we may be gaining you may be gaining they may be gaining  | 
Perfect | V-ing perfect | 
| I may have gained you may have gained she may have gained we may have gained you may have gained they may have gained  | I may have been gaining you may have been gaining she may have been gaining we may have been gaining you may have been gaining they may have been gaining  | 
Simple form | V-ing form | 
| I mayn't gain you mayn't gain she mayn't gain we mayn't gain you mayn't gain they mayn't gain  | I mayn't be gaining you mayn't be gaining she mayn't be gaining we mayn't be gaining you mayn't be gaining they mayn't be gaining  | 
Perfect | V-ing perfect | 
| I mayn't have gained you mayn't have gained she mayn't have gained we mayn't have gained you mayn't have gained they mayn't have gained  | I mayn't have been gaining you mayn't have been gaining she mayn't have been gaining we mayn't have been gaining you mayn't have been gaining they mayn't have been gaining  | 
Simple form | V-ing form | 
| may I gain? may you gain? may she gain? may we gain? may you gain? may they gain?  | may I be gaining? may you be gaining? may she be gaining? may we be gaining? may you be gaining? may they be gaining?  | 
Perfect | V-ing perfect | 
| may I have gained? may you have gained? may she have gained? may we have gained? may you have gained? may they have gained?  | may I have been gaining? may you have been gaining? may she have been gaining? may we have been gaining? may you have been gaining? may they have been gaining?  | 
Simple form | V-ing form | 
| mayn't I gain? mayn't you gain? mayn't she gain? mayn't we gain? mayn't you gain? mayn't they gain?  | mayn't I be gaining? mayn't you be gaining? mayn't she be gaining? mayn't we be gaining? mayn't you be gaining? mayn't they be gaining?  | 
Perfect | V-ing perfect | 
| mayn't I have gained? mayn't you have gained? mayn't she have gained? mayn't we have gained? mayn't you have gained? mayn't they have gained?  | mayn't I have been gaining? mayn't you have been gaining? mayn't she have been gaining? mayn't we have been gaining? mayn't you have been gaining? mayn't they have been gaining?  |